header {
  position: fixed;
  padding: 0 20px ;
  top: 0;
  width: 100%;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #fff;
  border-bottom: 1px solid #e6e3e3;
}
header a {
  width: 70px;
}
header span {
  width: 70px;
  color: #2561EF;
}
.head {
  margin-top: 50px;
  background-color: #fff;
  display: flex;
  padding: 0 20px;
  align-items: center;
  justify-content: flex-start;
  font-size: 12px;
}
.head img {
  height: 60px;
}
.head p {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-direction: column;
}
.head p span {
  margin: 3px ;
}
.main-1,
.main-2,
.main-3,
.main-4 {
  background-color: #fff;
  margin-top: 20px;
  padding: 0 20px ;
}
.main-1 h5,
.main-2 h5,
.main-3 h5,
.main-4 h5 {
  font-weight: normal;
  padding: 10px 0;
  border-bottom: 1px solid #e5e5e5;
  font-size: 14px;
}
.main-1 li,
.main-2 li,
.main-3 li,
.main-4 li {
  font-size: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #e5e5e5;
  color: #666666;
}
